Bending-machine.



J. P. 00X] BENDING MACHINE.

EPLICATIGN FILED MARA 7. 1910.

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UNITED STA'IWIATENT OFFICE.

JAMES FILLMORE cox, or BAYONNE, N'EW JERSEY, Assrenon or ons-HALF To MATTHEW T. CRONIN, OF BAYONNE, NEW JERSEY.

BENDING-MACHINE.

1,021,662. Original application led June 3, 1909,

To all whom it may concern:

Be it known that I, JAMES Finnuons Cox, a citizen of the United States, residing at Bayonne, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Bending-Machines, of which the following is a specification.

My invention relates to improvements in tube or pipe bending machines, more especially for effecting such bending along what` may be termed radial lines and which is a division of my application tiled June 3, 1909, Serial Number 499,868.

It consists of the combination of parts including their arrangement, as well as their structural features, substantially as hereinafter fully described and defined by the claims.

In the accompanying drawings illustratiing the preferred embodiment of n y invention-Figure 1 is a plan View of a machine constructed upon the general principles of the machine forming the sub-ject.` rna'tter of the application above referred to. Fig. 2 is a broken, partly sectional view showing the gearing arrangement of the frictionclutch mechanism, whereby the power is applied or transmitted through a pair of ruiter gears and a vertical shaft to the endless chain and also by means of a pair 'of beveled gears in connection with a horizontal shaft,

-Worm and worm-wheel, to the feed-rolls.

Fig. 3 is a view in sectional and side elevation, partly fragmentary, of the feed-roller mechanism as also embraced in Fig. 1. Fig. 4 is a detached perspective view of one of the principal features of my invention or what may be termed the bending arm.

In referring to4 radial bending attention is directed to Fig. 1 by way of illustrating thc making of whaty I term a radiai bend which is produced by means of the operative connection of the radial-l ending arm 105 with the member 106, which is more clearly shown in Fig. 4. In making this style of' bend. the radial bend, the radial-bending arm or attachment 108 is secured to the member 10V as shown in Fig. 1. The forward roller 107 of the member 108 has a corresponding.

groove in its periphery to acconunodatc thc diameter of tubing which is to be operated upon.' rl`he roller 107 is carried by tho cen- Specification of Letters Patent. Patented Dial'. 26, 1912.

Divided and this application tiled March 7,

ing suitable bearings in the member 108, which bearings are formed by the openings ENv therein, Said member also being provided with an additional roller113 also having suitable bearings therein. Said member 10H has also duplicate right-angled arms E near one end. Slots or elongated openings 114-, E, E13 are provided to receive shafts which carry preferably grooved steel rollers 107, 113 arranged between the lateral members of the arm 108, said rollers beingr suitably held upon said shafts by nuts and washers as indicated at 122, 121, 122", 121". Suitable graduation marks El, E12 are suitably produced contiguous to. said slots for determining the proper positioning of the lsaid rollers. Also arranged in connection with the bed-plate A, as disclosed by Figs. 1 and 4, is a graduated member 111, its graduations being designated E, for guidance in suitably positioning the radial bending arm 108m producing a bend of certain radius. 'The arm 108 has a handle at one end for its suitable manipulation along the graduated member 111, said member 111 passino through a clamping block 109, the arm 16,8 also extending through said clamping block but at right-angles` to the direction of the member 111 and above it. A back rest .l is suitably supported in position to have, :rslidable movement and is adapted to bc actuated by a hund-wheel Z, .said back-rest carrying the members 70 and 100. A manually actuated locking screw 110 is suitably applied to, or tapped in the rlaniping block 109. In order to eifectively lock tluradial bonding arm in themember 111 it is only required to suitably actuate thc member 110. The central roller which engages thc .shaft 123 is now advanced until it engages llul tubing which is accomplished hiv suitablyy oynrating the hand-wheel Z, actuating the t' ril-screw which advances the buck-rest .l .rrying the members 106 and T0. In ord r to make the radial bends, the friction isuposed upon the inside half of the pipe fr tubing by means of the former M is coy Joined with the friction `imposed upon t1' outer half by means of the roller carrier? by the shaft 123 as shown in Fig. 1 and v .lich in turn serves to hold the tubmg intuw, with respect to the member M whiph uniform souri-c. of friction at all ter 122 which is preferably '.1 steel shaft. ha vi ihres.

The rear end of the block 10G is the initial point of resistance and the pipe passes in a straight line into the machine, between the roller borne by shaft 123 a'id the inember M. The machine is then started and subjected to a steady driving action, for imparting a rotation to the member M by means of mechanism notshown herein. The member M continuously rotating, will cause the pipe or tubing, in conjunction with the friction imposed thereon to be drawn forwardly, causing it to pass in contact with the member M and the rollers 10T and 113. When the ipe or tubing reaches the first roll 107 a ben ing action will begin to be delivered thereon between this` pointand the eenter or point at which the friction is imposed, the pipe or tubing passing beyond the roll 107 to, and being engaged by the roll ll Where it will receive the full aniount of bending.

I claim- 1. In la machine of the character described, the combination with a grooved forme-r and means for actuatingi the saine. ofa guiding contrivance comprising parallel spaced-apart members provided with right`- angled outstanding portions. a groored roller arranged between the latter and a second rooved roller arranged betii'ecn said ineiners, contiguous to the periphery ot the first referred to roller, said grooi'ed former and rollers being adapted to receive between them the object for bending.

2. In a machine of the character described, the combination with a rotary groei-ed former, of a guiding contrivance .comprising parallel spaced-apart members having rig1it-angled outstanding portions, gi'oo'ved rollers arranged intermediate of said members and said right-angled 'pollharinar right angled arms, said members and arins having' longitudinalslots therein eX- tending in lines perpendicular to each other, rollers haring their axles received by and adjustable in said slots, said-r0llers beingr arranged contiguous to said grooved former, a braciret ixhose trend is at right-angles to that of said guiding contrivance, means for the retention of said bracket in effective position` a f :laniping block engaging seid guiding eontrii'ance and bracket.

ln testimony whereof I affix myfsigna` ture in presence of two witnesses.

JAMES FILLMORE COX.

W il. nessef:

Joli. J. RYAN, Mi'rrnicw T. CiroNiN. 

